OK, I didn't do much of the work for this one! I was browsing various other 3D download sites, thinking how bad most of the free models are for 3D printing and found this : http://www.archibase.net/download/27844.html I thought it could be printable. So, downloaded it & imported the .3ds file into Google Sketchup. Realised that it wasn't perfect, so added a base and a support for the chin. I also decided to add a void in the middle to hopefully use a bit less plastic but still have something to "fill" for strength. The void has a flat top. My printer did a reasonable job of printing the flat with no support. First layer a bit sketchy, second was fine. I'm guessing there would be better ways to do the chin support as well but this was a quick job!

This thing fits in a 5cm cube. If you want to make it bigger you can simply use sketchup to scale it. Maybe print yourself a lion head to sit on top of your gatepost! Just download the STL and run it through Skeinforge or whatever you prefer. When it's printed you'll need to carefully cut the chin support off.